CN114389922B - Codebook subset determining method and device and user equipment - Google Patents

Codebook subset determining method and device and user equipment Download PDF

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CN114389922B
CN114389922B CN202210094236.0A CN202210094236A CN114389922B CN 114389922 B CN114389922 B CN 114389922B CN 202210094236 A CN202210094236 A CN 202210094236A CN 114389922 B CN114389922 B CN 114389922B
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srs resource
srs
codebook subset
configuration
codebook
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CN114389922A (en
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郭力
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03891—Spatial equalizers
    • H04L25/03898—Spatial equalizers codebook-based design
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/0482—Adaptive codebooks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/563—Allocation or scheduling criteria for wireless resources based on priority criteria of the wireless resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A method and device for determining codebook subsets and user equipment are provided. In the method, a UE receives first indication information sent by a network device, wherein the first indication information is used for indicating a first Sounding Reference Signal (SRS) resource in a SRS resource set; the UE receives first configuration information sent by network equipment, wherein the first configuration information is used for configuring a codebook subset; the UE determines a codebook subset for uplink transmission based on the first indication information and the first configuration information.

Description

Codebook subset determining method and device and user equipment
The application relates to a method and a device for determining a codebook subset and a division application of user equipment, wherein PCT international patent application PCT/CN2020/108987 with the application date of 2020, 08 and 13 enters China patent application number 202080028707.7 in China national stage.
Technical Field
The disclosure relates to the technical field of mobile communication, and in particular relates to a method and a device for determining a codebook subset and user equipment.
Background
Existing methods for determining codebook-based Physical Uplink Shared Channel (PUSCH) are based on the following assumptions: the number of antenna ports for all Sounding Reference Signal (SRS) resources is the same in the set of SRS resources configured for codebook-based Uplink (UL) transmission. But to support full power transmission, a different number of antenna ports will be configured for different SRS resources in the SRS resource set for codebook-based UL transmission. As such, if the existing method is still used, the configuration of the codebook subset will be erroneous; also, the method of determining the transmit precoding matrix indicator (Transmit Precoding Matrix Indicator, TMPI) and the size of the rank domain in the Downlink Control Information (DCI) format 0_1 for scheduling codebook-based PUSCH is also erroneous because the design is based on the assumption that the number of antenna ports for different SRS resources in the SRS resource set is the same.
Disclosure of Invention
The embodiment of the application provides a method and a device for determining codebook subsets and user equipment.
The method for determining the codebook subset provided by the embodiment of the application comprises the following steps:
the method comprises the steps that UE receives first indication information sent by network equipment, wherein the first indication information is used for indicating first SRS resources in an SRS resource set;
the UE receives first configuration information sent by network equipment, wherein the first configuration information is used for configuring a codebook subset;
the UE determines a codebook subset for uplink transmission based on the first indication information and the first configuration information.
The embodiment of the application provides a codebook subset determining device, which comprises:
a receiving unit, configured to receive first indication information sent by a network device, where the first indication information is used to indicate a first SRS resource in an SRS resource set; receiving first configuration information sent by network equipment, wherein the first configuration information is used for configuring a codebook subset;
and the determining unit is used for determining a codebook subset used for uplink transmission based on the first indication information and the first configuration information.
The user equipment provided by the embodiment of the application comprises a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and executing the codebook subset determining method.
The chip provided by the embodiment of the application is used for realizing the method for determining the codebook subset.
Specifically, the chip includes: and a processor for calling and running the computer program from the memory, so that the device on which the chip is mounted performs the above-described codebook subset determination method.
The computer readable storage medium provided by the embodiment of the application is used for storing a computer program, and the computer program enables a computer to execute the method for determining the codebook subset.
The computer program product provided by the embodiment of the application comprises computer program instructions, wherein the computer program instructions enable a computer to execute the method for determining the codebook subset.
The computer program provided by the embodiment of the application, when running on a computer, causes the computer to execute the method for determining the codebook subset.
The technical scheme of the application supports full-power transmission based on the configuration of SRS resources with different antenna port numbers in an SRS resource set for codebook-based transmission. For a given codebook-based PUSCH transmission scheduled by a DCI format, the UE may determine the correct codebook subset for the indicated SRS resources and determine the correct size of the bit domain TMPI and rank from the indicated SRS resources.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
fig. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;
fig. 2 is a flow chart of a method for determining a codebook subset according to an embodiment of the present application;
FIG. 3 is a flowchart of a method for determining a codebook subset according to an embodiment of the present application;
fig. 4 is a flowchart of a method for determining a codebook subset according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a codebook subset determining apparatus according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application;
FIG. 7 is a schematic block diagram of a chip of an embodiment of the application;
fig. 8 is a schematic block diagram of a communication system provided by an embodiment of the present application.
Detailed Description
The following description of the technical solutions according to the embodiments of the present application will be given with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The technical scheme of the embodiment of the application can be applied to various communication systems, such as: long term evolution (Long Term Evolution, LTE) systems, LTE frequency division duplex (Frequency Division Duplex, FDD) systems, LTE time division duplex (Time Division Duplex, TDD), systems, 5G communication systems, future communication systems, or the like.
An exemplary communication system 100 to which embodiments of the present application may be applied is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal 120 (or referred to as a communication terminal, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminals located within the coverage area. The network device 110 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or a radio controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device may be a mobile switching center, a relay station, an access point, an in-vehicle device, a wearable device, a hub, a switch, a bridge, a router, a network-side device in a 5G network, or a network device in a future communication system, etc.
The wireless communication system 100 further comprises at least one terminal device 120 located within the coverage area of the access network device 110. The terminal device 120 may be mobile or stationary. Alternatively, the terminal device 120 may refer to an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved PLMN, etc.
Alternatively, direct to Device (D2D) communication may be performed between the terminals 120.
Alternatively, the 5G communication system or 5G network may also be referred to as a New Radio (NR) system or NR network.
Fig. 1 illustrates one network device and two terminals, alternatively, the communication system 100 may include multiple network devices and each network device may include other numbers of terminals within its coverage area, which is not limited by the embodiment of the present application.
Optionally, the communication system 100 may further include a network controller, a mobility management entity, and other network entities, which are not limited by the embodiment of the present application.
It should be understood that a device having a communication function in a network/system according to an embodiment of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal 120 with communication functions, where the network device 110 and the terminal 120 may be specific devices described above, and are not described herein again; the communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.
It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
In order to facilitate understanding of the technical solutions of the embodiments of the present application, the following describes the technical solutions related to the embodiments of the present application.
As specified in 3gpp release 15, for codebook-based PUSCH transmission, the UE may be configured with SRS resource set, with the use/purpose of higher layer parameters set to "codebook". In the SRS resource set, the UE may be configured with one or two SRS resources, which should have the same number of antenna ports. For codebook-based PUSCH transmission, the codebook subset may be configured for the UE by the RRC parameter codebook subset. Codebook-based PUSCH transmission may be scheduled through DCI format 0_1. The UE determines its PUSCH transmission precoder according to SRS Resource Indicators (SRIs), TPMI and transmission ranks given by DCI fields and precoding information and number of layers of the SRS resource indicators.
The TPMI is used to indicate a precoder to be applied to the layer {0 … v-1 } corresponding to an SRS resource selected by the SRI in case that a plurality of SRS resources are configured, or if a single SRS resource is configured, the TPMI is used to indicate a precoder to be applied to the layer {0 … v-1 } and corresponding to the SRS resource. The transmission precoder selects from the uplink codebook the number of antenna Ports of which is equal to the number of antenna Ports in the SRS resource configured for the codebook-based PUSCH, the latter being provided by the RRC parameter nrofSRS-Ports in SRS-Config.
For codebook-based transmission, the UE determines its codebook subset based on TPMI and according to the higher-layer parameter codebook subset in the received pusch-Config, which may be configured using "fullyantiparanddnoncomponent" or "partialndnoncomponent" or "noncomponent" depending on the capability of the UE. The maximum transmission rank may be configured by a higher layer parameter maxRank in pusch-Config. Specifically, for a 4-antenna port, the codebook subset may be "fullyand partialanddnoncoherent", "partialanddnoncoherent" or "nonCoherent". But for a 2 antenna port, the codebook subset configuration can only be "fullyand partialanddnoncoherent" or "nonCoherent". When the higher-layer parameter nrofSRS-Ports in SRS-resource set with use set to "codebook" indicates that two SRS antenna Ports are configured, the UE should not expect to configure the higher-layer parameter codebook subset set to "partialanddnoncomponent" for the UE.
For codebook-based transmission, the UE may be configured with a single SRS-resource set with a use setting of "codebook" and may indicate only one SRS resource based on SRIs from the SRS resource set. The maximum number of SRS resources configured for codebook-based transmission is 2.
When multiple SRS resources are configured by SRS-Resource set to "codebook" in use, the UE should expect that the higher layer parameter nrofSRS-Ports in SRS-Resource should configure the same value for all of these SRS resources.
Table 1 provides PUSCH precoding information configured based on codebook subsets. .
TABLE 1
Existing methods for determining codebook-based Physical Uplink Shared Channel (PUSCH) are based on the following assumptions: the number of antenna ports for all Sounding Reference Signal (SRS) resources is the same in the set of SRS resources configured for codebook-based Uplink (UL) transmission. But to support full power transmission, a different number of antenna ports will be configured for different SRS resources in the SRS resource set for codebook-based UL transmission. As such, if the existing method is still used, the configuration of the codebook subset will be erroneous; also, the method of determining the sizes of TMPI and rank domain in Downlink Control Information (DCI) format 0_1 for scheduling codebook-based PUSCH is also erroneous because the design is based on the assumption that the number of antenna ports of different SRS resources in the SRS resource set is the same.
In the embodiment of the invention, the following PUSCH transmission method supporting full power transmission is provided:
-configuring 1 SRS resource with 4 ports and 1 SRS resource with 2 ports in a set of SRS resources configured for codebook-based PUSCH transmission. If the configured codebook subset is "partialanddnoncoherent", the UE shall assume that the codebook subset of "non-coherent" is used when SRS resources with 2 antenna ports are indicated for PUSCH transmission.
In PUSCH configuration, the UE is provided with two higher layer parameters for configuration of codebook subsets: a first configuration for a 4 antenna port and a second configuration for a 2 antenna port. For a given PUSCH transmission, the UE determines a codebook subset from the indicated SRS resources and the corresponding RRC parameters.
In DCI format X in which PUSCH transmission is scheduled, the sizes of TPMI and rank domain depend on the number of antenna ports configured in SRS resources indicated by the SRI domain in the same DCI format X. Here, DCI format X is, for example, DCI format 0_1.
The following describes the technical scheme of the embodiment of the present application in detail.
Fig. 2 is a flowchart of a method for determining a codebook subset according to an embodiment of the present application, as shown in fig. 2, where the method for determining a codebook subset includes the following steps indicated in the block. The method starts at block 201.
Step 201: the UE receives first indication information sent by the network equipment, wherein the first indication information is used for indicating first SRS resources in an SRS resource set.
In an optional embodiment of the present application, the UE receives second configuration information sent by a network, where the second configuration information is used to configure the SRS resource set, and the SRS resource set includes one or more SRS resources; where the set of SRS resources includes a plurality of SRS resources, the number of antenna ports of different SRS resources of the plurality of SRS resources can be configured to be different or the same.
In an alternative embodiment of the application, the SRS resource set is configured to support full power transmission.
In an alternative embodiment of the present application, the use of the SRS resource set is set to codebook.
In an alternative embodiment of the present application, the first indication information may be an SRI. Further, SRIs are carried in DCI.
Step 202: the UE receives first configuration information sent by a network, wherein the first configuration information is used for configuring a codebook subset.
In an alternative embodiment of the present application, the first configuration information is carried in a higher layer signaling (such as RRC signaling). The first configuration information includes one or more configuration parameters, which may also be referred to herein as higher layer parameters or RRC parameters, one configuration parameter being used to determine a codebook subset configuration.
Step 203: the UE determines a codebook subset for uplink transmission based on the first indication information and the first configuration information.
Mode one
The first configuration information includes a configuration parameter, such as: the UE receives a higher layer parameter codebook subset to provide codebook subset configuration.
Case one: the UE determines a first SRS resource in the SRS resource set based on the first indication information and the second configuration information; in case that the first SRS resource has 2 antenna ports, if the first configuration information is set to partialanddnoncontent, the UE determines that a codebook subset for uplink transmission is non-content.
And a second case: the UE determines a first SRS resource in the SRS resource set based on the first indication information and the second configuration information; in the case that the first SRS resource has 2 antenna ports, if the first configuration information is set to partiallndnoncoherent, the UE determines that a codebook subset for uplink transmission is fullypartiallndnoncoherent.
In an alternative embodiment, if the maximum number of antenna ports of all SRS resources in the SRS resource set is 2, the UE does not expect the network device to set the first parameter to partialandnetwork connector.
In an alternative embodiment, the UE sends second indication information to the network device, where the second indication information is used to indicate that when the 2 antenna port is used for uplink transmission, the UE supports a subset of codebooks for uplink transmission. Further, the second indication information is carried in a capability report of the UE.
Mode two
The first configuration information includes a plurality of configuration parameters, and different configuration parameters in the plurality of configuration parameters are used for determining codebook subset configurations corresponding to different antenna ports.
In an alternative manner, the plurality of configuration parameters includes a first configuration parameter for determining a first codebook subset configuration corresponding to the 4 antenna port and a second configuration parameter for determining a second codebook subset configuration corresponding to the 2 antenna port.
The UE determines a first SRS resource in the SRS resource set based on the first indication information and the second configuration information; in the case that the first SRS resource has 2 antenna ports, the UE determines a codebook subset for uplink transmission based on the second codebook subset configuration; or, in the case that the first SRS resource has 4 antenna ports, the UE determines a codebook subset for uplink transmission based on the first codebook subset configuration.
In the embodiment of the present application, the UE receives DCI, where the DCI is used to schedule the uplink transmission, and the DCI includes a first bit field and a second bit field; the first bit field is used for bearing third indication information, the third indication information is used for indicating precoding and transmission rank information, the second bit field is used for bearing the first indication information, and the first indication information is used for indicating first SRS resources in SRS resource sets;
wherein the size of the first bit field is determined based on at least one of:
the value of the second bit field;
the port number of the first SRS resource is indicated by first indication information in the second bit domain;
and configuring a target codebook subset, wherein the target codebook subset is configured as a codebook subset configuration corresponding to the port number of the first SRS resource.
In the above scheme, the first bit field is TPMI and rank field (TPMI and rank field), and the second bit field is SRI field (SRI field).
The above technical solutions of the embodiments of the present application are illustrated below with reference to specific application examples.
Example one (corresponding to the above-described mode one)
The UE is configured for SRS resource sets for codebook-based UL transmissions. In the SRS resource set, one or more SRS resources may be configured for the UE. When a plurality of SRS resources are configured in the resource set, the same or different number of antenna ports may be configured for the SRS resources. In one example, in the SRS resource set, the first SRS resource is configured with 4 antenna ports and the second SRS resource is configured with 2 antenna ports. The UE may be configured with higher layer parameters to configure the codebook subset. For codebook-based PUSCH transmissions, the UE determines its codebook subset based on TMPI, SRI, and higher-layer parameters configuring the codebook subset. If the higher-layer parameters of the codebook subset are set to "partialAndNonCoherent", the UE shall assert the second SRS resource indicated by the SRI to be the codebook subset used when "nonCoherent".
As shown in fig. 3, the method of determining codebook subsets in the example may include the steps shown in the following blocks. The method may begin at 301.
Step 301: the UE receives configuration information for a codebook-based uplink SRS resource set from a network device. Within the SRS resource set, there are second SRS resources configured with 2 antenna ports.
Here, the UE receives configuration information of an SRS resource set for codebook-based UL transmission from the network device. The SRS resource set is configured to support full power transmission. In the SRS resource set, the UE is configured with a second SRS resource having 2 antenna ports.
In step 302, the ue receives a higher-layer parameter codebook subset set to "partialanddnoncomponent".
Here, the UE receives a higher layer parameter codebook subset to provide codebook subset configuration. The higher layer parameter codebook subset is set to "partialanddnoncoupler".
Step 303: for PUSCH transmission, if the second SRS resource is indicated for the PUSCH transmission, the UE will assume the codebook subset as "non-coherent".
Here, when the second SRS resource is indicated for PUSCH transmission, the UE should assume that the codebook subset for PUSCH should be incoherent. For a given PUSCH transmission, if the second SRS resource is indicated by the SRI, the UE should assume the codebook subset as "non-coherent".
According to the technical scheme of the embodiment of the invention, the SRS resource set with the purpose of 'codebook' can be configured for the UE, such as the SRS-resource set with the high-level parameter. In the SRS resource set whose use is set to "codebook", one or more SRS resources may be configured for the UE. When multiple SRS resources are configured by SRS-Resource set and used with a setting of "codebook," the UE may expect that the higher-layer parameter nrofSRS-Ports in SRS-Resource may be configured with the same or different values for all of these SRS resources.
In pusch-Config, the UE may be provided with a higher layer parameter codebook subset, which may be configured as "fullyantialdnoncoder", "partialdnoncoder" or "noncoder" depending on the UE capability. When the maximum value of nrofSRS-Ports in SRS-Resource of all SRS Resource configurations in SRS-Resource set to "codebook" is 4 antenna Ports, a higher layer parameter codebook subset set to "fullyantialdnoncomponent" or "partialanddnoncomponent" or "noncomponent" may be configured for the UE.
When the SRS-Resource set to "codebook" configures a plurality of SRS resources, if the maximum value of higher-layer parameters nrofSRS-Ports in SRS-Resource set to "codebook" is 4 antenna Ports and there is at least one SRS Resource configured with two antenna Ports in SRS-Resource set to "codebook", if higher-layer parameters codebook subset in pusch-Config is configured to "partialndnoncoder", the UE shall assume that a codebook subset of SRS resources configured with two antenna Ports in SRS-Resource set to "codebook" is "non-coder".
For another example, when the SRS-Resource set to "codebook" configures a plurality of SRS resources, if the maximum value of higher-layer parameters nrofSRS-Ports in the SRS-Resource set to "codebook" is 4 antenna Ports and there is at least one SRS Resource configured with two antenna Ports in the SRS-Resource set to "codebook", if the higher-layer parameters codebook subset in the pusch-Config is configured to "partialAndnCoherent", the UE shall assume that the codebook subset of the SRS resources configured with two antenna Ports in the SRS-Resource set to "codebook" is "fullyAndpartiAndnCoherent".
When the maximum value of nrofSRS-Ports in SRS-Resource configured for all SRS resources in SRS-Resource set to "codebook" for use is two antenna Ports, the UE should not expect the higher layer parameter codebook subset configured to "partialanddnonresource".
In an alternative embodiment of the present disclosure, in the UE capability report, the UE may report an uplink codebook subset of 2 antenna ports supporting the full power transmission mode. In one example, the UE has four Tx antenna ports. When using 4 antenna ports, the UE may report the parameter pusch-transmit resource in the UE capability report to report the subset of uplink codebooks supported for UL precoding. When 2 antenna ports are used for UL transmission, the UE may also report parameters in the UE capability report to report the subset of uplink codebooks supported for UL precoding. In one example, the 2 antenna ports may be implemented by the UE through antenna virtualization.
Example two (corresponding to mode 2)
The UE may be provided with multiple RRC parameters to provide codebook subset configurations for multiple different numbers of antenna ports. In one example, the UE may be provided with a codebook subset configuration for four antenna ports and a codebook subset configuration for two antenna ports. The UE may be configured with a set of SRS resources for codebook-based UL transmissions. In the resource set, the UE may be configured with a plurality of SRS resources of the same or different number of antenna ports. For a given PUSCH transmission, the UE should determine the codebook subset from the higher layer parameters and SRS resources indicated by the SRI.
As shown in fig. 4, the method of determining the codebook subset in this example may include the method shown in the following block. The method may begin at 401.
Step 401: the UE receives from the network device a first configuration of a codebook subset for 4 antenna ports and a second configuration of a codebook subset for 2 antenna ports.
Here, the network device may configure the UE with a first configuration of a codebook subset for 4 antenna ports and a second configuration of a codebook subset for 2 antenna ports.
Step 402: the UE is configured for SRS resource sets for codebook-based UL transmissions. In the SRS resource set, the UE may be configured with one or more SRS resources. Each SRS resource may be configured with 1 or 2 or 4 antenna ports.
Step 403: for PUSCH transmission, SRS resources in the set of resources are indicated by the SRI, and the UE should determine a codebook subset according to the number of antenna ports configured in the indicated SRS resources and the configuration of the codebook subset provided by the higher layer parameters.
Here, for a given codebook-based PUSCH transmission, SRS resources in the set of resources are indicated by the SRI field in the DCI scheduling the PUSCH transmission. The UE then determines a codebook subset for PUSCH transmission based on the SRS resources indicated by the SRI and the codebook subset configuration provided by the higher layer parameters. In one example, if the SRS resources indicated by the SRI are configured with two antenna ports, the UE should determine the codebook subset according to the second configuration. If the SRS resources indicated by the SRI are configured with four antenna ports, the UE should determine a codebook subset according to the first configuration.
In one example, two higher layer parameters codebook subset and codebook subset2port may be provided to the UE in the pusch-Config. The higher layer parameter codebook subset is used to provide codebook subset configurations for 4 antenna ports and more than 4 antenna ports. The higher layer parameter codebook subset2port is used to provide codebook subset configuration for 2 antenna ports. The UE may be configured to use a set of SRS resources set to "codebook" as configured by the higher layer parameters SRS-resource. In the SRS resource set whose purpose is set to "codebook", the UE may be configured with one or more SRS resources. When multiple SRS resources are configured by SRS-resources that are purpose-set to "codebook," the UE may expect that the higher-layer parameters nrofSRS-Ports in SRS-resources may configure the same or different values for all of these SRS resources. The nrofSRS-Ports configured in SRS-Resource may be 1 or 2 or 4 for each SRS Resource.
For codebook-based transmission, the UE may be configured to use a single SRS-resource set to "codebook" and indicate only one SRS resource according to the SRI in the SRS resource set. For a given PUSCH transmission, if the SRS resources indicated by the SRI are configured with 2 antenna ports, the UE will determine its codebook subset from the higher layer parameter codebook subset2 ports, and if the SRS resources indicated by the SRI are configured with 4 antenna ports, the UE will determine its codebook subset from the higher layer parameter codebook subset.
Further, in an alternative embodiment of the present disclosure, in PUSCH transmission based on DCI scheduling codebook, the size of the bit-field "precoding information and the number of layers" depends on the value of the bit-field SRI. The UE determines the bit quantity of the bit domain precoding information and the layer number according to SRS resources indicated by SRI in DCI. The UE may be configured with SRS resource sets for codebook-based PUSCH transmissions. In the SRS resource set, the UE may be configured with one or more SRS resources. When there are multiple SRS resources, the same or different number of antenna ports may be configured for different SRS resources. For codebook-based PUSCH transmission, one SRS resource may be indicated by an SRI in the scheduled DCI in the SRS resource set. And then the UE determines the bit quantity of precoding information and layer number according to the quantity of the antenna ports configured in SRI indicated SRS resources and the configuration of a codebook subset provided by the quantity of the antenna ports for the ports (configured in SRI indicated SRS resources).
In one example, DCI format 0_1 is used to schedule PUSCH transmissions. The bit field "SRS resource indicator" (SRI) indicates one SRS resource from the SRS resource set whose purpose is set to "codebook", and the bit field "precoding information and layer number" indicates PUSCH precoder and transmission rank information. The number of bits of the bit field "precoding information and number of layers" may be determined as follows:
the number of bits of — precoding information and number of layers "is a function of the value in the bit-domain SRS resource indicator.
The number of bits of — precoding information and number of layers "is a function of the number of configured antenna ports in the SRS resource indicated by the bit domain SRS resource indicator.
The number of bits— "precoding information and number of layers" is a configuration function of the codebook subset provided by the number of antenna ports of the higher layer parameters (for configuration in the SRS resource indicated by the bit domain SRS resource indicator).
-in one example, if txConfig = codebook, the number of bits is 2 or 4 or 5, depending on whether the transform precoder (transform precoder) is enabled or disabled, the value of the higher layer parameter maxRank, and the configuration of the codebook subset, if the number of antenna ports in the SRS resource indicated by the "SRS resource indicator" is 4.
-in one example, if txConfig = codebook, the number of bits is 4 or 5 or 6, depending on whether the transform precoder (transform precoder) is enabled or disabled, the value of the higher layer parameter maxRank, and the configuration of the codebook subset, if the number of antenna ports in the SRS resource indicated by the "SRS resource indicator" is 4.
-in one example, if txConfig = codebook, the number of bits is 2 or 4, depending on whether the transform precoder (transform precoder) is enabled or disabled, the value of the higher layer parameter maxRank, and the configuration of the codebook subset, if the number of antenna ports in the SRS resource indicated by the "SRS resource indicator" is 4.
-in one example, if txConfig = codebook, the number of bits is 1 or 3, depending on whether the transform precoder (transform precoder) is enabled or disabled, the value of the higher layer parameter maxRank, and the configuration of the codebook subset, if the number of antenna ports in the SRS resource indicated by the "SRS resource indicator" is 2.
According to the embodiment, the codebook-based transmission is performed by configuring different antenna port numbers for the SRS resources in the SRS resource set, so that the full-power transmission is supported. For a given codebook-based PUSCH transmission scheduled by a DCI format, the UE may determine the correct codebook subset for the indicated SRS resources and determine the correct size of the bit domain TMPI and rank from the indicated SRS resources.
Fig. 5 is a schematic structural diagram of a codebook subset determining apparatus according to an embodiment of the present application, where the codebook subset determining apparatus is applied to a UE, and as shown in fig. 5, the codebook subset determining apparatus includes a receiving unit 501 and a determining unit 502.
A receiving unit 501, configured to receive first indication information sent by a network device, where the first indication information is used to indicate a first SRS resource in an SRS resource set; receiving first configuration information sent by network equipment, wherein the first configuration information is used for configuring a codebook subset;
a determining unit 502, configured to determine a codebook subset for uplink transmission based on the first indication information and the first configuration information.
In an optional embodiment of the present application, the receiving unit 501 is further configured to receive second configuration information sent by the network device, where the second configuration information is used to configure the SRS resource set, and the SRS resource set includes one or more SRS resources. Wherein, in a case where the SRS resource set includes a plurality of SRS resources, the number of antenna ports of different SRS resources among the plurality of SRS resources can be configured to be different or the same.
In an alternative embodiment of the application, the SRS resource set is configured to support full power transmission.
In an alternative embodiment of the present application, the use of the SRS resource set is set to codebook.
In an optional embodiment of the present application, the determining unit 502 is configured to determine, based on the first indication information and the second configuration information, a first SRS resource in the SRS resource set; if the first configuration information is set to partialanddnoncoherent, determining that a codebook subset for uplink transmission is non-coherent.
In an optional embodiment of the present application, the determining unit 502 is configured to determine, based on the first indication information and the second configuration information, a first SRS resource in the SRS resource set; if the first SRS resource has 2 antenna ports, if the first configuration information is set to partiallndnoncoherent, it is determined that a codebook subset for uplink transmission is fullypartiallndnoncoherent.
In an optional embodiment of the present application, if the maximum number of antenna ports of all SRS resources in the SRS resource set is 2, the UE does not expect the network device to set the first parameter to partialandnetwork node.
In an alternative embodiment of the application, the apparatus further comprises a sending unit 503.
A sending unit 503 configured to send second indication information to the network device, where the second indication information is used to indicate that, when the 2 antenna port is used for uplink transmission, the UE supports a codebook subset for uplink transmission.
In an optional embodiment of the application, the second indication information is carried in a capability report of the UE.
In an optional embodiment of the present application, the first configuration information includes a plurality of configuration parameters, and different configuration parameters in the plurality of configuration parameters are used to determine codebook subset configurations corresponding to different antenna ports.
In an alternative embodiment of the present application, the plurality of configuration parameters includes a first configuration parameter and a second configuration parameter. The first configuration parameter is used for determining a first codebook subset configuration corresponding to a 4-antenna port, and the second configuration parameter is used for determining a second codebook subset configuration corresponding to a 2-antenna port.
In an optional embodiment of the present application, the determining unit 502 is configured to determine, based on the first indication information and the second configuration information, a first SRS resource in the SRS resource set; determining a codebook subset for uplink transmission based on the second codebook subset configuration in the case that the first SRS resource has 2 antenna ports; or, in the case that the first SRS resource has 4 antenna ports, determining a codebook subset for uplink transmission based on the first codebook subset configuration.
In an optional embodiment of the present application, the receiving unit 501 is further configured to receive DCI, where the DCI is used to schedule the uplink transmission, and the DCI includes a first bit field and a second bit field; the first bit field is used for bearing third indication information, the third indication information is used for indicating precoding and transmission rank information, the second bit field is used for bearing the first indication information, and the first indication information is used for indicating first SRS resources in SRS resource sets;
wherein the size of the first bit field is determined based on at least one of:
the value of the second bit field;
the port number of the first SRS resource is indicated by first indication information in the second bit domain;
and configuring a target codebook subset, wherein the target codebook subset is configured as a codebook subset configuration corresponding to the port number of the first SRS resource.
In an alternative embodiment of the present application, the first bit field is a TPMI and rank field, and the second bit field is an SRI field.
It should be understood by those skilled in the art that the description of the codebook subset determining apparatus according to the embodiment of the present application may be understood with reference to the description of the codebook subset determining method according to the embodiment of the present application.
Fig. 6 is a schematic structural diagram of a communication device 600 provided in an embodiment of the present application. The communication device may be a user device or a network device, and the communication device 600 shown in fig. 6 includes a processor 610, where the processor 610 may call and execute a computer program from a memory to implement the method according to the embodiments of the present application.
Optionally, as shown in fig. 6, the communication device 600 may also include a memory 620. Wherein the processor 610 may call and run a computer program from the memory 620 to implement the method in an embodiment of the application.
The memory 620 may be a separate device from the processor 610 or may be integrated into the processor 610.
Optionally, as shown in fig. 6, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, and in particular, may send information or data to other devices, or receive information or data sent by other devices.
The transceiver 630 may include a transmitter and a receiver, among others. Transceiver 630 may further include antennas, the number of which may be one or more.
Optionally, the communication device 600 may be specifically a network device according to the embodiment of the present application, and the communication device 600 may implement a corresponding flow implemented by the network device in each method according to the embodiment of the present application, which is not described herein for brevity.
Optionally, the communication device 600 may be specifically a mobile terminal/user equipment according to an embodiment of the present application, and the communication device 600 may implement corresponding processes implemented by the mobile terminal/user equipment in each method according to the embodiment of the present application, which are not described herein for brevity.
Fig. 7 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 700 shown in fig. 7 includes a processor 710, and the processor 710 may call and run a computer program from a memory to implement the method in the embodiment of the present application.
Optionally, as shown in fig. 7, chip 700 may also include memory 720. Wherein the processor 710 may call and run a computer program from the memory 720 to implement the method in an embodiment of the application.
Wherein the memory 720 may be a separate device from the processor 710 or may be integrated into the processor 710.
Optionally, the chip 700 may also include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and in particular, may obtain information or data sent by other devices or chips.
Optionally, the chip 700 may further include an output interface 740. Wherein the processor 710 may control the output interface 740 to communicate with other devices or chips, and in particular may send information or data to other devices or chips.
Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.
Optionally, the chip may be applied to the terminal/mobile terminal in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the terminal/mobile terminal in each method in the embodiment of the present application, which is not described herein for brevity.
It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.
Fig. 8 is a schematic block diagram of a communication system 800 provided by an embodiment of the present application. As shown in fig. 8, the communication system 800 includes a user device 810 and a network device 820.
Wherein the user device 810 may be configured to implement the corresponding functions implemented by the user device in the above-described method, and the network device 820 may be configured to implement the corresponding functions implemented by the network device in the above-described method.
It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.
It will be appreciated that the memory in embodiments of the application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
The embodiment of the application also provides a computer readable storage medium for storing a computer program.
In at least one embodiment, the computer readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program causes the processor to execute the corresponding flow implemented by the network device in each method embodiment of the present application, which is not described herein for brevity.
In at least one example, the computer readable storage medium may be applied to a mobile terminal/user equipment in an embodiment of the present application, and the computer program causes a processor to execute a corresponding procedure implemented by the terminal/mobile terminal in each method embodiment of the present application, which is not described herein for brevity.
Embodiments of the present application also provide a computer program product comprising one or more computer program instructions.
In at least one example, the computer program product may be applied to a network device in an embodiment of the present application, and the computer program instructions cause a processor to execute a corresponding flow implemented by the network device in each method embodiment of the present application, which is not described herein for brevity.
In at least one example, the computer program product may be applied to a terminal/mobile terminal in an embodiment of the present application, and the computer program instructions cause the processor to execute a corresponding procedure implemented by the terminal/mobile terminal in each method embodiment of the present application, which is not described herein for brevity.
The embodiment of the application also provides a computer program.
In at least one example, the computer program may be applied to the network device in the embodiments of the present application, and when the computer program is executed by the processor, the processor is caused to execute a corresponding flow implemented by the network device in the embodiments of the methods of the present application, which is not described herein for brevity.
In at least one example, the computer program may be applied to a terminal/mobile terminal in an embodiment of the present application, where the computer program, when executed by a processor, causes the processor to execute a corresponding flow implemented by the terminal/mobile terminal in each method embodiment of the present application, which is not described herein for brevity.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.
In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (12)

1. A method of determining a subset of codebooks, the method comprising:
the method comprises the steps that User Equipment (UE) receives first indication information sent by network equipment, wherein the first indication information is used for indicating first SRS resources in a sounding reference signal SRS resource set;
the UE receives first configuration information sent by network equipment, wherein the first configuration information is used for configuring a plurality of codebook subsets;
the UE determines a codebook subset for uplink transmission based on the first indication information and the first configuration information;
the method further comprises the steps of: the UE receives second configuration information sent by the network equipment; wherein the second configuration information is used for configuring the SRS resource set, and the SRS resource set includes one or more SRS resources; the SRS resource set is configured to support full power transmission; and is also provided with
Wherein, in a case where the SRS resource set includes a plurality of SRS resources, the number of antenna ports of different SRS resources among the plurality of SRS resources is configured to be different or the same;
the UE determining a codebook subset for uplink transmission based on the first indication information and the first configuration information, including:
the UE determines a first SRS resource in the SRS resource set based on the first indication information and the second configuration information;
In case that the first SRS resource has 2 antenna ports, if the first configuration information is set to "partialanddnoncontent", the UE determines that a codebook subset for uplink transmission is "non-content".
2. The method of claim 1, wherein the SRS resource set is set to a use of "codebook".
3. The method of claim 1, wherein,
in the case that the maximum number of antenna ports of all SRS resources in the SRS resource set is 2, the UE does not expect the network device to set the first parameter to "partialandnetwork existence"; the first parameter is a high-level parameter.
4. A method according to any one of claims 1 to 3, wherein the method further comprises:
the UE sends second indication information to the network device, where the second indication information is used to indicate that the UE supports a subset of codebooks for uplink transmission when the 2 antenna ports are used for uplink transmission.
5. The method of claim 4, wherein the second indication information is carried in a capability report of the UE.
6. The method of claim 1, wherein the first configuration information comprises a plurality of configuration parameters, different ones of the plurality of configuration parameters being used to determine codebook subset configurations corresponding to different antenna ports.
7. The method of claim 6, wherein the plurality of configuration parameters comprises a first configuration parameter for determining a first codebook subset configuration for a 4-antenna port and a second configuration parameter for determining a second codebook subset configuration for a 2-antenna port.
8. The method of claim 7, wherein the UE determining a codebook subset for uplink transmission based on the first indication information and the first configuration information comprises:
the UE determines a first SRS resource in the SRS resource set based on the first indication information and the second configuration information;
in the case that the first SRS resource has 2 antenna ports, the UE determines a codebook subset for uplink transmission based on the second codebook subset configuration; or alternatively, the process may be performed,
in the case that the first SRS resource has 4 antenna ports, the UE determines a codebook subset for uplink transmission based on the first codebook subset configuration.
9. A method according to any one of claims 1 to 3, wherein the method further comprises:
the UE receives downlink control information DCI, wherein the DCI is used for scheduling the uplink transmission and comprises a first bit domain and a second bit domain; the first bit field is used for bearing third indication information, the third indication information is used for indicating precoding and transmission rank information, the second bit field is used for bearing the first indication information, and the first indication information is used for indicating first SRS resources in SRS resource sets;
Wherein the size of the first bit field is determined based on at least one of:
the value of the second bit field;
the port number of the first SRS resource is indicated by first indication information in the second bit domain;
and configuring a target codebook subset, wherein the target codebook subset is configured as a codebook subset configuration corresponding to the port number of the first SRS resource.
10. The method of claim 9, wherein the first bit field indicates TMPI and a rank field for a transmit precoding matrix and the second bit field is an SRS resource indicator SRI field.
11. A device for determining a subset of codewords, the device comprising:
the receiving unit is configured to receive first indication information sent by the network equipment, wherein the first indication information is used for indicating first SRS resources in the SRS resource set; receiving first configuration information sent by network equipment, wherein the first configuration information is used for configuring a plurality of codebook subsets;
a determining unit configured to determine a codebook subset for uplink transmission based on the first indication information and the first configuration information;
the receiving unit is further configured to receive second configuration information sent by the network device; wherein the second configuration information is used for configuring the SRS resource set, and the SRS resource set includes one or more SRS resources; the SRS resource set is configured to support full power transmission; wherein, in a case where the SRS resource set includes a plurality of SRS resources, the number of antenna ports of different SRS resources among the plurality of SRS resources is configured to be different or the same;
The determining unit is configured to determine a first SRS resource in the SRS resource set based on the first indication information and the second configuration information; in the case that the first SRS resource has 2 antenna ports, if the first configuration information is set to "partialanddnoncontent", it is determined that the codebook subset for uplink transmission is "non-content".
12. A user equipment, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory, to perform the method according to any of claims 1 to 10.
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